Luminescent activity of two‐level molecule with population inversion
Luminescent activity of two‐level molecule with population inversion
复制标题
具有粒子数反转的两能级分子的发光活性
DOI：
10.1002/pssc.201510157
复制
发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Hajime Ishihara
中科院分区：
文献类型：
--
作者：
Ryosuke Hata;Hiroshi Ajiki;Nobuhiko Yokoshi;Hajime Ishihara
利用量子玩具模型研究了一种通过布居反转产生二能级分子上转换发光的新技术，该模型被用来描述一个支持局域表面等离子体激元(LSPP)的耦合分子和金属纳米天线系统。假设金属纳米天线具有非谐性，反映了实验观测结果。该系统由一个强的、非共振的、高斯脉冲激光驱动，使LSPP呈现Mollow三重态光谱。当二能级分子共振被调谐到上Mollow三重态边带时，分子能级布居发生反转。我们讨论了二能级分子的布居动力学、珀塞尔效应和上转换发光活性。这些结果表明，本系统在新型相干光源中具有潜在的应用前景。(2016Wiley-VCH Verlag GmbH&Co.KGaA，Weinheim)
A novel technique for up‐converted luminescence generation from a two‐level molecule via population inversion is studied using the quantum toy model; this model is used to represent a coupled‐molecule and metallic nano‐antenna system sustaining a localized surface plasmon polariton (LSPP). The metallic nano‐antenna is assumed to have anharmonicity, reflecting experimentally observed results. The system is driven by a strong, offresonant, and Gaussian pulse laser so that the LSPP exhibits a Mollow triplet spectrum. When the two‐level molecular resonance is tuned to the upper Mollow triplet sideband, the molecular‐level population is inverted. We discuss the population dynamics, the Purcell effect, and the up‐converted luminescence activity of the two‐level molecule. These results indicate the potential applications of the present system in novel coherent light sources. (© 2016 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)